package com.atguigu.lease.web.app.service.impl;


import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.common.utils.VerifyCodeUtil;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.app.service.LoginService;
import com.atguigu.lease.web.app.service.SmsService;
import com.atguigu.lease.web.app.service.UserInfoService;
import com.atguigu.lease.web.app.vo.user.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @Autowired
    private SmsService smsService;

    @Autowired
    private UserInfoService userInfoService;

    @Override
    public void getCode(String phone) {

        //判断手机号码是否为空
        if (!StringUtils.hasText(phone)) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        //拼接在redis中存储验证码的key
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;

        //判断Redis中是否已经存在该手机号码的key
        boolean hasKey = stringRedisTemplate.hasKey(key);
        if (hasKey) {
            //若存在，则检查其存在的时间
            Long expire = stringRedisTemplate.getExpire(key, TimeUnit.SECONDS);
            if (RedisConstant.APP_LOGIN_CODE_TTL_SEC - expire < RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC) {
                //若存在时间不足一分钟，响应发送过于频繁
                throw new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
            }
        }
        //获取验证码
        String verifyCode = VerifyCodeUtil.getVerifyCode(6);
        //发送验证码
        smsService.sendCode(phone, verifyCode);
        //将验证码存入Redis
        stringRedisTemplate.opsForValue().set(key, verifyCode, RedisConstant.APP_LOGIN_CODE_TTL_SEC, TimeUnit.SECONDS);
    }

    //登录功能
    @Override
    public String longin(LoginVo loginVo) {

        //判断手机号和验证码是否为空
        if (!StringUtils.hasText(loginVo.getCode())){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }
        if (!StringUtils.hasText(loginVo.getPhone())){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        //判断验证码是否过期
        String key =RedisConstant.APP_LOGIN_PREFIX+loginVo.getPhone();
        String codeInRedis=stringRedisTemplate.opsForValue().get(key);
        if (codeInRedis==null){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);
        }
        //验证码是否正确
        if (!codeInRedis.equals(loginVo.getCode())){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }
        //根据手机号查询用户信息
        LambdaQueryWrapper<UserInfo> wrapper=new LambdaQueryWrapper<>();
        wrapper.eq(UserInfo::getPhone,loginVo.getPhone());
        UserInfo userInfo = userInfoService.getOne(wrapper);
        //判断账号是否存在,若没有注册,则转为注册
        if (userInfo==null){
            userInfo=new UserInfo();
            userInfo.setPhone(loginVo.getPhone());
            userInfo.setNickname("用户-"+loginVo.getPhone().substring(5));
            userInfo.setStatus(BaseStatus.ENABLE);
            userInfoService.save(userInfo);
        }else{  //判断用户是否禁用
            if (userInfo.getStatus().equals(BaseStatus.DISABLE))
                throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
        }

        return JwtUtil.createToken(userInfo.getId(),loginVo.getPhone());
    }
}
